S-video 32X

Either should be a great improvement. Not that that's saying much. We all know about the negative reputation Genesis style composite has...

Keep in mind external RGB to s-video encoder boxes are scarce and expensive.

It actually costs less to get an RGB to component one, assuming one's setup can handle that. Despite component having more quality potential.

 

x

 

I'll be getting a 32x shortly here so I can at least play around with S-Video on my CRT to see how it looks compared to composite. The difference is readily apparent on a 32" display.

Wish I had an oscilloscope to check it out.

 

APE,

Since you have far more knowledge then me, if you can work an s-video out of it, can you post some kind of tutorial?
Maybe some pictures during the process to show where to cut and where to solder.

 

Out of the 2-5 S-Video circuits I've built and used on the CXA1145 I've not found one that works universally without trouble on every TV tested on. Have had trouble with a JVC X'EYE specifically; found a 6th I need to test out. Seems using a transistor+resistor to amplify luma just isn't enough for some displays.

I'm not too sure I follow what you mean about being looped back to form composite. I don't have intimate knowledge of the internals of the 32x mind you but from that thread above it looks like luma and chroma are being pulled out and amplified with a PNP transistor and a 100ohm resistor. Having a bit of trouble interpreting the images available in that thread as well but that'll clear up as soon as I have this 32x in pieces. Thing is every circuit I've seen for amplifying S-Video has used a NPN transistor.

And so long as you're getting luma and chroma seperated I'm not too sure how it wouldn't be 'proper' luma/chroma either. Personally I'd find it a PITA to install a CXA1645 or equivalent to take the RGB and output it as S-Video. Probably enough room if you used surface mounted components but it'd be a bit pricy.

If it works I could. I tend to make things ugly for testing purposes and pretty them up before I put everything together which makes me hesitant to put tutorials together. I can make an exception.

 

x

 

If the 32x did use a CXA1145 I don't think we'd be having this discussion.

 

x

 

Touche.

 

:boxing:

 

*bump* I figured it out and made a simple schematic